Apparatus for heating feed-water.



No. 888,172. PATENTED DEC. 11, 1906 J. H. DALES & G. G. BRAITHWAITE.

APPARATUS FOR HEATING FEED WATER.

APPLICATION FILED JULY 1, 1904.

Mar/Q4 W? 82 W 7% mow/Mg from the feed'wuter is allowed to escape in srrrrns riirnur orrioir.

JOHNTIANDSLEY DALES, OF ELSTRIJE, AND CHAR-LES CHRlS'iOPHEF BRAlTHvV'Al'IE, ()F HARPENDEN, ENGLAND.

APPARATUS FOR HEATlNG FEED-WATER.

- Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed July 1, 190 Serial No. 214,960.

penilen, in the county of Hertl'orrl, l higlond,

subjects of the King of Great Britain and beland, have invented improvements in Apparatus for .lrleul'ing, Decorating, and Purilyin Steam-Boiler Feedater, of which the following is u specilicution.

Objects of this invention to raise the temperature of the feed-wait er of slei'nu-boih ers to ii 'iproximutely that ol the steam which they generate before passing the feed-water into the Wt'LiOf-SPtLCB of the boilers end at the some time to deeernte the feed-water and to separate from it such mutter es enters the heater with the Wul OI or is thrown down during the healing. (all of ivl'iieh mutter is in tended to be hereiiuiiter included in the term -:lirt.)

in carrying out the invent ter is passed through a hoot r vessel which is in communication with inc Sl1821111- spurs of the boiler and from which air given oil the leed wusuch wise as to maintain ii sullicient depth of practically pure steam in the vessel to insure that the water in passing through it will become properly heated. Provision may also be mode for l he escape of any light gases that may be given oil iroiu the iced-water. The houln'ig vessel is int orposed in the feed-water passage bola-wen the feed-pinup or injector and the \Vlilil-liil(7i" of the ho in n, posit ion above the water-level in the .iler, the writer living iorced by the pump r vides ihe wzuer it desrcnzls into the boi irsteum which the heating vessel conla-uis.

The i'ccd-weter is thus very rapidly hen-led to i the temperature of the st cum, or i lltlltllMJlll, by "the intent houl ol the lnllol' which the water absorbs, and it passes the bottom of the healing vc-ssol and is conducted thence to a. convenient part ol' llie \VllllF-SPfi-(Jll of the boiler, provision being made l'or nllowing (llll to selllv :rml r-ollocl. prepnrutory to ill: rlis- 5 charge l'rom llll up mrnlns Preferably lhe ilisrlnu'g -pipil'llu' lu'ul lug vessel inl n which the l'o( l--\\':ller is sprnyml villi-rs n verlicul pipe or e'ylimlvr in which llu- :i-ir si p.-irnles l'roin llio water, and {in fr-oulilet. valve is placed near [he upper (llll l'such pipe or cylinder to permit of the air being discharged. Preferably at the lower end of the air-separating pipe or cylinder a. vessel is provided wherein dirt settles and collects, and the passage from which is so placed near the top thereof as to lead only the purer water to the boiler. A. bonnet or lid is provided for convenience in removing any adhering solid matter and a blow-oil valve at its lowest point for periodically clearing the loose deposit.

in the accompanying drawings, Figure 1 is :1 vertical section of an apparatus by which we prefer to carry out our invention, the boiler und-feerhpuiup being also indicated. Fig. 2 is an outside plain, and Fig. 3 is on elevation of the apparatus.

a, is ii valve for spraying into the heating vessel 1) feed-water, which is supplied under sufficient. pressure through a passage or branch 0 from. on ordinary feed-purnp d or injector. The vessel 6 is supplied through a. pipe e with steam of the highest possible pressure from the steznn spuce in the boiler B. The waiter from the spreyingvalve c in falling through the steam in the vessel 6 obsorbs the latent heat of the steam without loweruig its temperature in a general sense. The feednveter thus heated is conducted by a nozzle f into a vertical pipe or cylinder 9, the upper part of which forms a chamber h, in which aircollecl's around the nozzlef and the lower part of which is in connnunication with the water-space of the boiler.

i is :1 cock or valve, which can be operated by hand or cny be automatic in its action, l'or the purpose of releasing the air collect-ed in the clniinbrr 71. T]. .iir which enters with the lend-waiter through the sprirv'ingwalve is of considerably greats sperihc gravity than the steam end accumulates in the pipe or cylinder r until it rises into the air-chamber h. By allowing it to escape into the utmosphcre or other ise through the cook or valve i from time to nine or continuously it is kept down to the level ol" the outlet-valve i, and pure steam or strum containing very little niris thus innintniiu-(l in the vessel 1). in the working of the apparatus this is iinportunt, us the air can tlu'rel be precluded from lilling the chamber/1 uml strain-pi ing an prevent provided with an escape-valve i for any leasing air from feed-water, and Wade not light'gases which may be given off by the water. By providing a separate escape cock orfvalve for gases which are lighter than the steam these gases are also prevented from collecting and interfering with the commingling of the steam and water.

The feed-water after it is heated enters the lower part of the pipe g and maintains a level corresponding to that in the boiler.

j isthe dirt-depositing chamber, the top of which 18 in communication with the pipe g I and by a lateral branch In with the waterin the dirt-chamber j.

spaceof the boiler. Dirt sinks in thewater in the vessel g and the chamber and the deposit is blownout to waste periodically through a cock or valve Z.

For convenience the chamber is provided with a mud-hole and door m, an thermon1cters n n are provided in contact with the steam in the branch pipe 0 and with the water The pipe or cylinder 9 is provided with a water-gage o. The thermometers serve to indicate whether the heater is working properly or not because if the temperatures at the inlet and outlet do not apprd'xirnately agree it is an indication that one or both of the escape-valves L and 2 is or are furred up and that the heater does sprin 12 around its stein tending to kce it f usedf mea l 1 the blow of? valve,

osed against a seat (1, which projects slig itly 'into a dome-she ed recess r in the cover of the vessel b. ith this arrangementan annular 'et of feed-water is projected. against the si es of the recess and is thus broken into ver fine spray.

envthe ap aratus is in use, the feedwater is spraye into the steam contained in the heating vessel b, and by reason of the latent heat of the steam the water is raised to the temperature, or thereabout, of'the steam, the heat so absorbed by the water expanding and separatin the air contained therein before or on reac ing the water-level in the pipe or. c linder g, the air accumulating until it reac esthe air-valve i, which is kept open to allow it to escape into the atmosphere. The heated water passes on its way to the boiler into the vessel 7', where any matter in suspension is deposited and, )eriodically cleared by or by removal of the door m. Although it may in some cases be found possible to dispense with the air-separating device orthe, dirt-collector, or both, We do not reco/mmend either of these modifications. The a )paratus above described may be I of dxhaust-steam.

W are aware that many suggestions have been made for heatuh/g iced-water bv causing itv t Ticommingle wit steam and also for re mating and deaerating feedwatcr by I tory arrangement has hitherto been devised,

and the reason -of the success of our apparatus is mainlyaattributable tothe fact that it is provided with escape-valves fitted in such positions that within the heater a space is maintained constant y charged with boilersteam that is free om gas or air, which space is of such a depth that the Water will oceupy in falling through said space a pe riod of time suliicient-to enable it to absorb the latent heat from the steam.

In a steam-boiler the transmission of.heat is most rapid through those portions of the heating-surface at which evaporation is actually taking place, and if the feed-water before admission to the boiler be raised to the temperature of the steam in the boiler at portions of the heating-surfacev ordinarily occupied in raising the temperature of the admitted feedwater toward the temperature of evaporation actual evaporation will occur, and thus a greater amount of heat will be transmitted from the fire to the Water side of the heatingsurface in a given time. l or this reason our apparatus has been designed with a view to enabling the feed-water to be heated to the full temperature of the live steam, and this can only be even approximately ellected by maintaining a suitable depth of practically pure steam for the feed water to pass through. The arrangement of the releasevalves is thus very important. Thus if a release-valve be provided only above the water-inlet steam would be prevented by the accun'iulation'oi the heavier air from occupying the space through which the Water falls. Thus the feed-water would pass to the boiler Without being materially raised in temperature. Again, if no release-valve'be provided at the top of the heating vessel and foul water be used light gascsavill accumulate and depress the level of pure steam with similar results. 1

What we claim is- 1. A fced-water-heating apparatus, comprising a vessel having a steam-inlet thereto, a feed-water inlet above the stean'i-inlet, a feedavater outlet therefrom and below said steam-inlet, and an enlarged air-collecting space surrounding the chamber and having an airrelease outlet and a coclrcon'trolling said outlet. I

2. l eedavater-heating apparatus comprising a vessel having a steam-inlet thereto, a feed-water inlet thereto, a feed-water outlet therefrom, below said -steam-inlet and above said water-outlet,an air-release outlet, and above said steam-inlet, av light-gas-release outlet, as set forth,

3. A feed-water-heating apparatus, comprising a vessel, the upper part of which has a steam-inlet, feed-water inlet above the steam-inlet, and said chamber serving as a 'feedewatenheatmg space, an outwardly en larged air-collecting space surrounding the middle part of the chamber and having an airescape release-outlet arpock controlling said air-escape release-outlet, and the lower part of said chamber provided with a water-out let and adapted to serve as a dirt-collector.

4. in feed-water-heating apparatus, the combination with a steam boiler and, a

source of supply of feechwater of a vessel that lower part of said vessel and the water-space of the boiler, Whichcommunications are adapted to keep the water-level in the vessel approximately :the same as in the boiler, means tor admitting iced-water ilO-Sttltl vessel and an air-release aperture in said vessel below the communication with the boiler steamspace and above the water-level, as set forth.

5. In feed-water-heating apparatus, the combination with a steam-boiler and a source olsupply of feed-water of a vessel that extends above and below the water-level in ,said boiler, a communication between the upper part of said vessel and the steam-space of said boilerfa communication between the lower part of said vessel and the water-space of the boiler, which communications a re adapted to keep the Water-level in the vessel approximately the same as in the boiler, means for admitting feed-water to said vessel, an air-release aperture in said vessel below the communication with they boiler stcam-space and above the waterrlevel, and a light-gasrelease aperture in said vessel above the com munication with the boiler steamspace, as set forth.

6. In feed-water-heating apparatus, the combination with a steam-boiler and a source of supply of feed-Wa te of a heating vessel above the level of-th'e ater inthe boiler, a communication between said vessel and tho steam-space of the boiler, means whereby the feedwater is passed through the heating vessel, an air-collecting chamber surrounding the heating vessel below the steam-inlet and in communication therewith, an aperture for releasing air from said chamber a cock controlling said aperture and a COIlllIlLll'llCfLtlUll lor the steam-heated feed-water between the said collecting-chamber and the boiler, the,

said steam and feed-water comn'iunications with. the boiler being adapted to keep the Water-level in the apparatus below the airrelease aperture, as set lorth.

7. In feed-water-heating apparatus, the combination Willi a steam-boiler and a source of supply of feed-water, ol a heating vessel above the level of the water in the boiler, a

communication between said vessel and the steam-space of the boiler, means whereby the feed-water is passed through the licatirg vessel, an air-collecting chamber below a nd conimunicating with said heating vessel, an aperture for releasing air l'rom said chamber, an a rture above the steam commuiiiciition lor i :sing light gases from said. heating vessel and a coniinunicatiim 'lor the steam-healed iced-water between the said (rollecting-clianiher and the boiler, the said steam and loudwater communications with the boiler being adapted to keep the water-level in the apparatus below the air-release aperture, as set forth.

8. In leed-water-hcating apparatus, the combination with a steamboiler and a source of supply of reed-waiter, of a heating vcsscl above the level or' the water in the boiler, a communication between said vessel and the steam-spacc ol' the boiler, means whereby the lecd-wator is passed through the heating vessel, an air-collecting chamber below and communicating with said heating vessel, an aperture for releasing air lrom said chamber, an aperture above the steam coniniunication for releasing lit uses 'lroni said healing chamber and communicating therewith, a communication between said dirt-dcpositing vessel and the watcr-space ol the boiler, said steam and feed-water communications with the boiler being adapted to keep ilic waterlevel in theuppiiralus approximately the same as in the boiler, as set lortli.

ll. .ln l'ccd-water-licating apparatus, the combination with a steam-boiler and a source of supply of feed-water ola vessel above the level ol the water in the boiler, a commnnii'cation between said vessel and the stciim-space ol the boiler a recess in the to )ol' said vessel a seat projecting into said recess and upon which the valve closes, said valve being adapted to project the flAEll-dt'itlfil in an annular jct against the walls tlicreoi and break it up into spray, an air-collecting cliainbei'surrounding the steain-cl'iainber and in cominiinic lion therewith and having an air-release aperture and a communication lor the steam heated feed-water between the lower part of said vessel and the wider-space oi' the boiler, said steam and l'ecd-water cominunications with the boiler being adapted to keep the \\'atei'-levcl in the apparatus below tlieair-relcasc aperture, as set lortli.

.10. in feed-watcr-hcating apparatus the com binution with a stcaimboilor and a source of supply of fecd-watcr of a heating vessel above the level of the water in the boiler, a conmiunication between said vessel and the steam-space of the boiler, means whereby the feed-water is admitted to said heating vcsscl, an air-collecting chamber below said vcsscl, a pipe depending from said vessel sonic distance into said chamber, a valve l'or releasing air from said chamber, and a passage lor the steain-heiited feed-water between said chiinivessel and a dirt-ilcpositing vessel below said ol'- supply of feedboiler, as set forth.

I it drowniz L her and the Water-space of the boiler, said steam and teed-water connnunicsiions with the boiler being adopted. to liQ'") the water level in the apparatus below i. o uirrcleese aperture, forth.

115111 leer. otcr-heeting apparatus, the combination. with Lt stozun-boi le'r and a. son rro nter of a limiting vessel, rt conmmnicuiion between said vessel and the stean -S1 2LGQ oi tho boiler..zi valve adapted. to spray the focd'wntor intosujt'l vessel, an nilcollccting elnmibcr below said vessel, a pipe depending lrom said vessel some distance into said chamber, s valve for releasing air from said chamber, and e cmnnuinicetion for the steam-heated feedovetcr between. the said chamber and the boiler, said stelrm and ioed-wnter communications with. the boiler being adopted to keep the unteulevcl in the apparatus below the air-release aperture set forth.

12. In lecd-wetor-heiiling np nutetus, the combination with a steexmboi lcr and t source of supply of feed-water of cheating vessel above the level of the water in the boiler, :t communication with the steam-space ol" the boiler, a valve adapted to sprhy the feed-imter into said vessel, ztu air-collecting chemlmr below said vessel, pipe depending from said vessel some distance into ssid chamber, 51 valve for releasing air from said chamber, a dirt-depositing vessel below said chamber and communicating therewith, a communication betWeei'rsa-id dirt-depositing vessel and the Water-space of the boiler, seid steam and feed-Winter communications with the boiler bein adapted to keep the wzitenlevel in the apparatus approximately the some as in the 13. in feed-Watcr-hezitin apparatus, the combination of sheeting vessel, :1 steam-inlet thcreto, means for spraying licedovzttcr into said vessel, an air-collecting cl'ntniber below said vessel, an extension. of said vessel projecting some distance downwardly into said chamber so that the letter surrounds it, a valve-tori tirfromthe surrounding portion or .eid chamber and located above the mouth of said pipe nnd mcnns lfor carry ing oil the heated teed-waiter and preventing he nlrl.olensc i elve, set forth.

ll. in tootl water-heating apparel-us, tho coi'nliimit-ion of i heating vessel, moans For conducting stczini thereto, menus for spraying feed-Water into said vessel, an illl'-(l)ll0(ibing chamber below said vessel and in communicetion tlnn'ewith, menus for releasing all from said chamber, :1 po e-go mlziplcd to carry oil the heated. icorbwnter and prevent it drowning the, sir-release valve, and thermonietcrsin the sloltnnsupplyinn and hunted. fcedovater pa ssu lb, as set forth.

15, in fGQd-lv tormenting eb 'ntrnlus, lho combination oi" it heating vessel, menus for ing feed-Witter into said vessel, an air-collecting chemlmr below said vessel and in communiolttion therewith, means for releasing air from said chamber, a dirt-depositing device below sztid chamber and communicating therewith, a passage adapted. to carry oil the llgzilictl teed-water, and prevent it drowning tlTe air-release valve, and thermometers in the steam-supplying and heated feed-Water passages, as set forth.

16. in food-wliter-heating apparatus, the coml inztti'on of it vessel '1), a pipe 6 for conducting stcznn thereto from the steam-space of :1 )iler, :i feed-weter-spreying valve a, an airwollccting chem oer h surrounding the vesbelow and in communication with the vessol I), acock 2' for releasing the collected sir, sod :1 loctl-weter-outlet passage ll communicating with tho wntonspuce of the boiler, substantially as described.

l7. in leed-wetcr-heeting apparatus, the combination of a vessel 1), a pipe 6 for conducting steam thereto from the steam-space of a boiler, at i l Xi-WYZLlCf-SPI'FtYlDQ valve a, an air-collecting chamber 51 it below and in comnuniicution with the vessel 5, s cock i for releasing the collected all, at light gas-release VztlVB i and efeed-wliter-outlet passage 7c communicating with the Water-space of the boiler, substantially as described.

18. In a icedwzttcr-heeting apparatus, the combination of a vessel 1), a pipe 6 for conducting steam thereto from the steem-spece of it boiler, s l'eed-water-spreying valve a, an

air-collecting chamber h surrounding the vessel below and in communication with the vessol b, a cock 5. for releasing the collected air, s 'dirt-dcpositing device 7', and a teed-writeroutlet passage is communicating with the water-space of the boiler, substantiellyes described.

19.1 1 feed weter-hesting apparatus, the combination of n vessel 6, n pipe 0 for conducting steam thereto from the steemspace of a boiler, a feed-walter-swaying valve (1, an air-collecting chamber g h be oW and in com uumicstion with the vessel Z), it cock i for re lensing the collected air, a light gas-release valve i zt dirt-depositing device and. a leml-wntor-ontlct passage 7c communicating vwith the water-splice of the boiler, substam.

tizilly as described.

20. l n food-wtiter-hosting apparatus, the combination ol :1, vessel ll, 2L pipe (-1 for conducling steam thereto from the stennnspnco. ol a boil r. n teed-ivstir-spraying valve (1, an nir-collovl lug climnbcr g It below and in cornmunirntiou with the vessel 1), a cock 'i for releasing the collected. air, it dirt-depositing rim loo j, =1 passage I; between same and the \\1tl=' r--sp:u o ol the boiler, and thermometers n, substantially as described.

2i. ln Food-wntcr-hhnting apparatus, the combination of a vessel 1). :1, pipe 0 [or con conducting sten-nnthcreto, moans for spmyl ducting stoitni thereto l'rom the stemii-s mce LIX of a boiler, afeed-wliter-spraying valve a, an air-collecting ehamberug /L below and in comimunication with the vessel 2, a rock i l'or releasim; the collected air, a light gas-release valve i", a l'eed-water-outlet passage communicaling wi l. tho water-sp=we of the; boiler, and thermometers a in the steam-inlot and iced-water outlet, substantially as described 22. in feed-warer-heating apparatus, the

combination ol a vessel 1), a pipe e for eonducting' steam thereto from the steam-space of a boiler, a teed-water-spraving valve (1, an air-collecting chamber g /1 below and in l'nlilinunieation with the vessel I). a rock a for releasing the collected air, a light gas-release valve a feed-waler-outlet passage con:- nmmcatmg with the water-spm'e oi the boiler, a water-gage o and lhernmn'eters n in f the steam-inlet and l'eedwater outlet, substantially as described.

23. In a teed-v. aterheating apparatus, the 5 combination with a steani-l oiler and a source of supply ol iced-water, ot' a heating vessel, a coinn'iunieation between said vessel and tho steam-space of the laoiler, a "alve adapted to spray the teed-water into the said essel above the steam-supply, an air-outlet valve above the steam-supply, an air-col lee-ting chamber below said vessel. a pipe dependin; l'roni said vessel some distance into said chan'iler. a valve lor releasnrc an" from said chamber, and a coininunicat on for the Li"ttl'l':l-ll.tfllttl iced-miter between said chum her and the boiler, said steam and teed-water eomiu'unications with the boiler beingadapted to keep the water-level in the apparatus below the air-relmse valve as set forth.

2%. In a feed-waiter-hcating apparatus, the combination with a steaneboiler and a source of suppl) of feed-wai er, of a heating; vessel locatedin a line above the water-line ol" tl1o boiler and in comniunieation with the steam space oi the boiler, a valve adapted to spray teed-water into said vessel above the steann supply, an air-outlet above the steam-supply,

a depending pipe in communication with the lower end of said vessel and forming a wat erreceiving' chamber, and a communicat ion between said chamber and the boiler below the water-lino.

In a feed-water-heating a combination with a steam-boiler and a source of supply of teed-water, of a heat-in; vessel located in a line above the water-line of the boiler and in communication with the st ea m-- space of the boiler, a valve adapted to spray the feed-water into said vessel above the stean'i-supply, an air-outlet valve above. the 1 steam-supply, an air-collecting chamber bej f low said vessel, a pipe depending from said vessel some distance into the chamber, a valve for releasing th 1 air from said chamber, and a pipe communicating with the chamber and with the boiler below the water-line therei ii.

26. hi a, l'eml-wator-heating apparatus, the combination with a vessel, a steam-supply tberelor intermediate its ends, a feed-water supply adjacent the upper end of the vessel, and an air-collecting chamber surrounding the lower end of the vessel and in oonmiunicat ion l herewirb, and an air-escape cock carried by the upper end of the air-collecting chamber.

:27. In a leeil-waier-heating apparatus, the combination with a vessel, a steannsupply tiierel'or intermediate its ends, a teed-water supply :uljzu-em the upper end above the steam-supply. the vessel having a contracted l lower end, an air-collecting chamber surround in; the sa id contracted end of the vessel and in eomnumication therewith, and an airescape. cock carried by the upper end of the air-collect ing chamber.

28. In a. leed-wa er-heating apparatus, the combination with a vessel, a steam-supply l rherel'or intermediate its ends, a eed-water gsupplv adjacent the upper end above the l si eam-suppl v", the vessel having a contra eted lower end, an air-collecting-clniinber surl rounding the said contracted end of the vessel, and in communication therewith, an air escape cock carried by the upper end of the airntollecting chamber, and the lower end of tize air chamber contracted below the con iracted end ol the vessel and forming a water i supply pipe. l 29. In a feed-Water-heal.ing apparatus, the l combination. with a steam-boiler, of a vessel having its upper-end in connnunication with he steam-space of the boiler, a teed-water l supply for the vessel above the steam-supply, and said vessel having an air-collecting chamber surround ng its lower end and in communication there ith, an escape-cock carried h the pper end of the a ir-eollecting chaml'Jer, a pipe eominunicating with the lower end of the VJSSCl and with the waterspace of the boiler, the said steam and feed water communication with the boiler being adapted to keep 1'! e water-level in the apparat us below rho escape-cock.

Signed at London, l lngrland, this 15th day ol' June, 1904.

.ltlllX lliiNllSl il'lY lllhl'lb. tllUlbhS lllllllfi'llllllllll llllll'lllWAl'll'l. YVitnessos:

H. l). 'l AMnsoN, A. No'r'rino. 

